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ABBOT DAVIS. 0F CAMBRIDGE, MASSACHUSETTS.

Letters Patent 1V0. 74,056, dated February 4, 1868.

IMPROVED PROCESS OF TREATING WOOD FOB. COVERING WALLS, (be.

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TO ALL WHOM IT MAY CONCERN: 7

Be it known that I, ABBOfr R. DAVIS, of Cambridge, in the ,county of Middlesex, and State of Messachusetts, have invented a Process of Treating Wood, when'Uscd as :1. Covering for Plestered Walls, and for other purposes, where wood veneering is employed; and I hereby declare the following to be a full, clear, and exact description thereof. 7

My present invention has pnrticulnr reference to the subject embraced in Letters Patent of the United States, granted to me on the twenty-sixth day of November, A. D. 1867; and my invention consists in the employment of glycerine for saturating the thin sheets or luminge of wood to be used as a wall covering, or for other purposes, whereby the sheets are rendered soft and plastic, and thus prevented from cracking and breaking when exposed to it dry atmosphere, before or after being applied to the wall or other surface.

To enable others skilled in the art to understand and use my invention, I will proceed to describe the mannor in which I have carried it out. v I

Glycerine and water, in about the proportion of one pn rt of the form or to two or three of the latter, are mixed together, the two ingredients readily uniting. The thin sheets of wood aibove referred were now saturated with this mixture, and then placed where the water may evaporate therefrom, the glycerine still being retained by the wood, and being absorbed by it,s0 as to cause it to remain permanently soft and pliable: The amount of glycerine to be mixedin water may be increased according to the nature and degree of hardness of the wood to be saturated, but I have found the mixture produced by the ingredents in about the proportions first named to answer a. good purpose, and glycerine alone-may be used without departing from the spirit of my invention. I am aware that glycerine has been employed for suturnting sponge, to render it elastic for use, as n substitute for hair and other material for-filling mattresses. The application of glycerinefor this purpose I do not,

however, claim, but confine myself to the following, viz:

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What I claim as my invention, and desire to secure by Letters Patent, is- The employment of glyceriue for saturating thin sheets or laminae of wood, to be used as a Wall covering ABBOT R. DAVIS.

Witnesses:

' N. W. STEARNS,

P. E. Tescnnzuucnsn. 

